ROCK BRIDGE DRIVE
Carrying ROCK BRIDGE DRIVE over UNAMED DITCH
00.01 N OF CR 400 S, Boone, Indiana
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
ROCK BRIDGE DRIVE in Boone, Indiana sits above 36% of rated Indiana bridges on inventory load rating (33 t), while its 2008 build year is earlier than 15% of Boone's recorded-year cohort (293 bridges).
ROCK BRIDGE DRIVE in Boone, Indiana is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 2008, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 8. The lowest applicable rating sets the federal condition category, so this Good result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure IN:0600207
POST-2000 · CONCRETE · SINGLE-SPAN · CULVERT-LED · LOCAL-ADT · STANDARD-LOAD · CAT-GOOD
- POST-2000 2000+
- CONCRETE Concrete
- SINGLE-SPAN Single span
- CULVERT-LED Culvert-led
- LOCAL-ADT Local ADT
- STANDARD-LOAD Standard load
- CAT-GOOD Good
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: ROCK BRIDGE DRIVE
The ROCK BRIDGE DRIVE bridge in Boone, Indiana carries ROCK BRIDGE DRIVE over UNAMED DITCH. It was built in 2008, making it 18 years old today. The structure is built primarily of concrete and spans 1 section, stretching 10.9 meters (36 feet) end to end. Daily traffic averages 170 vehicles, placing it in the lower-traffic tier of Indiana bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show culvert at 8/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range.
How ROCK BRIDGE DRIVE compares
Age against the county: built in 2008, earlier than 45 of Boone's 293 bridges with a recorded construction year (15%), against a county median build year of 1971. This is one of the newer structures in its county.
Live comparison across Indiana bridges with a recorded inventory load rating (19,495 rated).
ROCK BRIDGE DRIVE vs every rated Indiana bridge
Inventory load rating (metric tons), FHWA NBI, this state
33 Top 64% higher than 36% of 19,495 bridges
rated Indiana bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Boone inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 293 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 2008
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 10.9 m (36 ft) 0
- Owner
- County Highway Agency
- Avg Daily Traffic
- 170 vehicles/day
- Structure Number
- 0600207
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether ROCK BRIDGE DRIVE is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare ROCK BRIDGE DRIVE against other structures in Boone and across Indiana. Indiana bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for ROCK BRIDGE DRIVE?
ROCK BRIDGE DRIVE in Boone, Indiana on the FHWA's 0–9 scale.
How often is ROCK BRIDGE DRIVE inspected?
ROCK BRIDGE DRIVE's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 170 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. ROCK BRIDGE DRIVE is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for ROCK BRIDGE DRIVE?
ROCK BRIDGE DRIVE has an NBI inventory load rating of 32.7 metric tons.
Who is responsible for maintaining ROCK BRIDGE DRIVE?
ROCK BRIDGE DRIVE is owned and maintained by County Highway Agency.
How old is ROCK BRIDGE DRIVE and does age affect safety?
ROCK BRIDGE DRIVE was built in 2008, making it 18 years old.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.